Answer:
答案是我不知道
Step-by-step explanation:
Answer:
x = 41 ft
Step-by-step explanation:
35(35+23) = 29(29+x)
2030 = 29(29+x)
70 = 29 + x
x = 41 ft
Answer:
The 71st term is 428.
Step-by-step explanation:
Use Arithmetic Explicit formula:
f(n) = f(1) + (n - 1) d
Solve:
f(71) = 8 + (71 - 1) 6
f(71) = 8 + (70) 6
f(71) = 8 + 420
f(71) = 428
Get all your variables on same side and solve x=-2
Simple....
you have:
-12+5k=15-4k
isolate the variable...
-12+5k=15-4k
+12 +12
5k=27-4k
5k=27-4k
+4k +4k
9k=27
k=3
Thus, your answer.
